For it to work, I had to make sure the data is base64 encoded ...

Now you mention it, I think I had to go that route also. It was a while ago.

That said, logic suggests that you should be able to bypass IO::String, and pass the output from gd directly to encode_base64(): 

my $png = $mw->Photo(-data => encode_base64( $gd->png ));

[download]

I see no reason that shouldn't work as what ends up in the file is exactly what comes out of the image methods, hence the need for binmode;

I've made quite a lot of use of GD (though I hardly qualify as an expert), but I am light on Tk;

(Grrr. I hate being unable to try stuff, and I hate the available upgrade paths for perl.)

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
Lingua non convalesco, consenesco et abolesco. -- Rule 1 has a caveat! -- Who broke the cabal?
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^4: Which tk to use and how to show images? by BrowserUk
in thread Which tk to use and how to show images? by Sinatra

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